scholarly journals Studies on chaetognaths off Ubatuba region, Brazil. II. Feeding habits

1995 ◽  
Vol 43 (1) ◽  
pp. 35-48 ◽  
Author(s):  
Tsui Hua Liang ◽  
Luz Amelia Vega-Pérez
Keyword(s):  
Developmental Stage ◽  
Prey Size ◽  
Feeding Habits ◽  
Low Frequency ◽  
Sao Paulo ◽  
Gut Contents ◽  
Clear Trend ◽  
Paulo State ◽  
Food Items ◽  
Common Food

The diet of chaetognath species were studied by examining the gut contents of 9466 specimens collected off Ubatuba region, São Paulo State. The greatest proportion of chaetognaths (7119 individuals) showed their gut contents empty. Copepods, mollusc eggs, appendicularians, cladocerans and annelids were the most common food items in the gut contents of juveniles and mature stages. Cannibalism occurred in low frequency. In Summer the copepods Temora stylifera and Paracalanus spp were more abundant, whereas Oncaea spp and mollusc eggs were heavily preyed in Winter. There was a clear trend of increasing prey size with the developmental stage.

scholarly journals Preliminary findings on the food and feeding dynamics of the anchovy Stolephorus commersonnii (Lacepède, 1803) and the Indian mackerel Rastrelliger kanagurta (Cuvier, 1817) from Tanga Region, Tanzania

2021 ◽  
pp. 71-80
Author(s):  
Baraka C. Sekadende ◽  
Joseph S. Sululu ◽  
Albogast T. Kamukuru ◽  
Mathias M. Igulu ◽  
Shigalla B. Mahongo
Keyword(s):  
Fish Larvae ◽  
Feeding Habits ◽  
Juvenile Fish ◽  
Gut Contents ◽  
Small Scale ◽  
Food Items ◽  
Food And Feeding ◽  
Rastrelliger Kanagurta ◽  
Penaeid Shrimps ◽  
Ring Net

Small pelagic fishes play an important role in the ecosystem by linking planktonic production and higher trophic level predators, and provide a livelihood to both the small-scale and commercial fisher communities. This study analyzed the food and feeding habits of Stolephorus commersonnii (Lacepède, 1803) and Rastrelliger kanagurta (Cuvier, 1817) from the ring-net fishery in Tanga, Tanzania. A total of 1 434 and 320 stomachs of S. commersonnii and R. kanagurta respectively were examined for gut contents using the relative volumetric method. S. commersonnii was found to be a planktivorous carnivore, feeding principally on planktonic penaeid shrimps (48.6%), fish larvae (33.2%) and zooplankton (12.3%). R. kanagurta was found to be carnivorous, feeding predominantly on fish (60.6%), mainly S. commersonnii, while penaeid shrimps, juvenile fish, and juvenile stages of squids formed 26.5% of the total number of food items in R. kanagurta guts. Both S. commersonnii and R. kanagurta exhibited ontogenic diet shifts, where they fed exclusively on small prey as juveniles and consumed larger food items as they grew. The index of vacuity was higher in S. commersonnii (46.1%) than in R. kanagurta (16.6%). This study revealed the importance of penaeid shrimps as food for S. commersonnii, that in turn formed the main food for R. kanagurta. This implied that the two species were able to coexist in the same niche by avoiding interspecific competition for food.

scholarly journals Feeding Habits of Different Fish Species in Negombo Lagoon

2019 ◽  
Vol 8 (2) ◽  
pp. 86-96
Author(s):  
Neetha Punchihewa ◽  
M.P.C. Silva
Keyword(s):  
Fish Species ◽  
Niche Breadth ◽  
Feeding Habits ◽  
Juvenile Fish ◽  
Stomach Contents ◽  
Gut Contents ◽  
Filamentous Algae ◽  
Relative Importance ◽  
Food Items ◽  
Plant Matter

To investigate the feeding habits of different fish species in Negombo lagoon, fish species were collected from Kadolkele and Liyanagemulla sites during February 2015 to July 2015 using a drag net. Collected specimens were preserved in 5% formalin. Later, the fish specimens were dissected, and stomach contents were mixed with water to make a suspension. One ml of suspension was added to the Sedgewick Rafter cell, and examined under the light microscope. The occurrence %, volume %, numbers %, and the Relative Importance Values (RIV) were calculated. The gut contents of 62 samples from 12 fish species were analyzed; 11 species were found to feed on mangroves, 10 on seagrasses, and 8 on filamentous algae. 13 food items were identified. Most of the analysed fish were categorized as omnivores and opportunistic feeders. The juvenile fish mainly feed on a combination of mangroves, seagrasses and filamentous algae. Apart from plant matter, the juvenile fish were found to feed upon Cyclops sp. and mysids. Although Hemirhamphus marginatus is an omnivore, it specially fed on mangroves, seagrasses and filamentous algae. Furthermore, H. marginatus consumed common food items in both habitats except mangroves and molluscs, and the shifting of its diet was depended on the availability of food. The broadest niche breadth was recorded by H. marginatus and the shortest niche breadth by the herbivorous fish species, Siganus vermiculatus and Liza macrolepis. Caranx sexfasciatus exhibited an ontogenetic shift in their diet. The smaller C. sexfasciatus was a carnivore and the larger individuals of the same species were herbivores.

scholarly journals Feeding habits of the spider crab Libinia spinosa H. Milne Edwards, 1834 (Decapoda, Brachyura) in Ubatuba bay, São Paulo, Brazil

2008 ◽  
Vol 51 (2) ◽  
pp. 413-417 ◽  
Author(s):  
Samara de Paiva Barros ◽  
Valter José Cobo ◽  
Adilson Fransozo
Keyword(s):  
Feeding Habits ◽  
Stomach Contents ◽  
Sao Paulo ◽  
Trophic Chain ◽  
Frequency Of Occurrence ◽  
Spider Crab ◽  
São Paulo ◽  
Paulo State ◽  
North Eastern ◽  
Stomach Contents Analysis

The main goal of this study was the identification of the items of the diet of the L. spinosa, based on the stomach contents analysis. The crabs were obtained from Ubatuba region north-eastern shore of São Paulo State. In the laboratory, all the individuals were dissected, the stomach was retreated and fixed in 10% formaline. The alimentary items were identified under stereomicroscope and analysed by the method of Frequency of Occurrence. A total of 194 stomachs was analysed and nine alimentary items were obtained. Unindentified material was found in 98% of analysed stomach and poriferan were present in less then 1% of stomachs. These results pointed a diversified diet explored by this crab, as well as the employment of some different methods for food intake. This suggested that these crabs could occupy different position in the trophic chain.

scholarly journals Chironomidae feeding habits in different habitats from a Neotropical floodplain: exploring patterns in aquatic food webs

2016 ◽  
Vol 76 (1) ◽  
pp. 117-125 ◽  
Author(s):  
C. M. M. Butakka ◽  
F. H. Ragonha ◽  
S. Train ◽  
G. D. Pinha ◽  
A. M. Takeda
Keyword(s):  
Food Webs ◽  
Feeding Habits ◽  
Fungal Spores ◽  
Gut Contents ◽  
Larval Feeding ◽  
Gut Content ◽  
Aquatic Communities ◽  
Food Items ◽  
Aquatic Food ◽  
Almost All

Abstract Ecological studies on food webs have considerably increased in recent decades, especially in aquatic communities. Because Chironomidae family are highly specious, occurring in almost all aquatic habitats is considered organisms-key to initiate studies on ecological relationships and trophic webs. We tested the hypothesis that the diversity of the morphospecies diet reflects differences on both the food items available among habitats and the preferences of larval feeding. We analyzed the gut content of the seven most abundant Chironomidae morphospecies of the different habitats from the Upper Paraná River. We categorized the food items found into algae, fungal spores, fragments of plants, algae and animal fragments and sponge spicules. We observed the algae predominance in the gut content of morphospecies from lakes. Considering the different regions from each lake, we registered the highest food abundance in the littoral regions in relation to the central regions. From the variety of feeding habits (number of item kinds), we classified Chironomus strenzkei, Tanytarsus sp.1, Procladius sp.1 as generalist morphospecies. We found a nested pattern between food items and Chironomidae morphospecies, where some items were common to all taxa (e.g., Bacillariophyceae algae, especially), while others were found in specific morphospecies (e.g., animals fragments found in Procladius sp.1). The algae represented the most percentage of gut contents of Chironomidae larvae. This was especially true for the individuals from littoral regions, which is probably due to the major densities of algae associated to macrophytes, which are abundant in these regions. Therefore, the feeding behavior of these morphospecies was generalist and not selective, depending only of the available resources.

scholarly journals Feeding habits of the ichthyofauna in a protected area in the State of São Paulo, southeastern Brazil

2008 ◽  
Vol 8 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Leandro Muller Gomiero ◽  
Francisco Manoel de Souza Braga
Keyword(s):  
Protected Area ◽  
Fish Community ◽  
Feeding Habits ◽  
Sao Paulo ◽  
The State ◽  
Trophic Relationships ◽  
Southeastern Brazil ◽  
São Paulo ◽  
Human Pressure ◽  
Food Items

The trophic relationships of a fish community were studied in two basins subjected to a strong human pressure in the interior of the State of São Paulo, southeastern Brazil. A total of 211 stomachs of 14 species were analyzed. Diets varied greatly, with the occurrence of piscivory, benthophagy, insectivory, herbivory, and illiophagy. Food items were described for each species and a great amount of insects was registered. Allochthonous and autochthonous food items showed different importance degrees according to the species analyzed. Stomach fullness was high in spring and summer in both basins; these areas were used as reproduction and foraging sites for the studied species.

scholarly journals Notes on the feeding of Blennius cristatus linnaeus from a rocky pool of Itanhaém, São Paulo state

1982 ◽  
Vol 31 (2) ◽  
pp. 01-03 ◽  
Author(s):  
Airton Santo Tararam ◽  
Yoko Wakabara
Keyword(s):  
Sao Paulo ◽  
Feeding Habit ◽  
São Paulo ◽  
Main Food ◽  
Paulo State ◽  
Food Items ◽  
São Paulo State ◽  
Preliminary Study

This preliminary study analyzes the feeding habit of the fish Blennius cristatus inhabiting a rocky pool, in Itanhaém, south littoral of São Paulo State - Brazil. The main food items found were: Alga, Decapoda Reptantia, Mollusca and Amphipoda. The results showed that B. cristatus is an omnivorous species and probably also a trophic specialist preying on Gammaridea, but on Hyale media only, although twelve other species of the group were recorded in the sampling local.

Implantação da Residência Médica e Multiprofssional em Saúde da Família em um município paulista: percepção de residentes da primeira turma (2014-2016)

2018 ◽  
Vol 19 (2) ◽  
pp. 106-114 ◽  
Author(s):  
Liliane Maria Guimarães de Pinho ◽  
Vera Lúcia Garcia ◽  
Maria Cezira Fantini Nogueira-Martins
Keyword(s):  
Family Health ◽  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State

Implementation of a multiprofessional residency in family health in a city of São Paulo state: perception of the first residents (2014-2016)

Review of Curd, Paneer and Cheese as Nitya Asevaniya Ahara Dravya w.s.r. to Dadhi, Kilat and Kurchika

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Saylee Deshmukh ◽  
Vyas M. K.
Keyword(s):  
Vitamin A ◽  
Growth And Development ◽  
Milk Protein ◽  
The Body ◽  
Rich Source ◽  
Food Items ◽  
Common Food ◽  
Daily Diet ◽  
Healthy Growth

Curd, Paneer and Cheese are rich source of milk protein, calcium, Vitamin A, Phosphorous, vitamins, minerals and protein which are required by the body in high proportions for healthy growth and development. It is common food in India. Cheese is also a rich source of fat. Curd, Paneer and Cheese can be correlated with Dadhi, Paneer and Cheese in Ayurveda classics which are listed in Nitya Asevaniya Ahara Dravya (food items not to be taken in daily diet). Present study aims to explain rationale behind description of these food items as Nitya Asevaniya Ahara Dravya.

Arsenic in terrestrial invertebrates from riparian areas of the Piracicaba River Basin, São Paulo State, Brazil

2017 ◽  
Vol 314 (3) ◽  
pp. 1675-1681
Author(s):  
Elvis J. França ◽  
Elisabete A. De Nadai Fernandes ◽  
Felipe Y. Fonseca ◽  
Marcelo R. L. Magalhães ◽  
Mariana L. O. Santos
Keyword(s):  
River Basin ◽  
Sao Paulo ◽  
São Paulo ◽  
Riparian Areas ◽  
Terrestrial Invertebrates ◽  
Paulo State ◽  
São Paulo State ◽  
Piracicaba River
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